Part of the Case Parts Manuals.
Ordering the right part for an 1840 Uni-Loader skid steer loader comes down to what these 618 pages put in front of you: the full Case 1840 parts catalog PDF, printed by J I Case. Exploded views run from the 4-390 engine and its emissions certified variant through fuel injection, the front and rear harnesses, tandem pump linkage, loader lift and bucket hydraulics, control valves, couplers and ROPS. Hydraulics take the biggest share of the book, and callout numbers tie each hose, drive motor and coupler to a part number, with serial break notes marking which version fits your machine. Measure before you order: the fan belt runs 1574.8 mm, and the negative battery cable comes in at 38 inch on the 12 volt system. Some jobs are just you and the loader, nobody to ask. Search a part number, use the bookmarks to land on the right group, then print the page and let it get greasy on the bench.
Complete the set for your 1840
- Repair Manual: Case 1840 Skid Steer Service Manual (incl. Wiring)
What's Inside This Case 1840 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine | 2-108 | Radiator and Oil Cooler, Engine Mounting and Exhaust System, Air Cleaner and Mounting Parts, 4-390 Emissions Certified Engine, Cold Start System |
| Fuel System | 109-142 | Fuel Injection System for the 4-390 and 4-390 Emissions Certified Engines, Fuel Filter for the 4-390 and 4-390 Emissions Certified Engines |
| Electrical System | 143-214 | Alternator Assembly, Starter, Front Harness and Instrument Cluster, Rear Harness and Battery, Accessory Harness, Road Lamps and Wiring, Rotating Beacon, Horn |
| Power Train | 215-275 | Pump Controls, Forward and Reverse Linkage, Loader Controls on Hand-Control Models, Loader Controls on Foot-Control Models, Tandem Pump Linkage, Tandem Pump Mounting |
| Brakes | 276-289 | Parking Latch and Dual Seat Bars Before PIN JAF0100496, Parking Latch and Dual Seat Bars From PIN JAF0100497, Parking Latch and Single Seat Bar |
| Hydraulics | 290-452 | Loader Lift Hydraulics, Loader Bucket Hydraulics, Control Valve, Hydrostatic Drive Hydraulics, Hydraulic Oil Filter, Couplers, Hydraulic Drive Motor, Pump Assembly |
| Chassis and Attachments | 453-618 | Chassis, Coupler, Pallet Fork and Brick Guard, Seat and Mounting, ROPS, Decals |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 89 dBA noise kit; models with the emissions certified engine take a 1498.6 mm belt | ||
| Drive belt length, 89 dBA noise kit | 1574.8 mm | p. 7 |
| All Models | ||
| Starter spring free length | 2-13/16 inch | p. 148 |
| Starter ball size | 11/32 inch | p. 148 |
| Battery Voltage | 12 volt | p. 160 |
| North American models to PIN JAF0066758; European models to PIN JAF0098065 | ||
| Negative battery cable length | 38 inch | p. 160 |
| Manifolds manufactured by Waterman (blue in color) | ||
| Loader bucket circuit check valve rating | 5 psi | p. 318 |
Case 1840 Common Problems This Manual Covers
Case 1840 skid steer fuel shut-off solenoid part number unclear, three different solenoids listed online
Start in the fuel injection system parts breakdown beginning on page 109. Match your engine variant first, since the 4-390 standard and 4-390 emissions certified engines carry separate callouts. Pull the solenoid callout number off the exploded view, then confirm it against the parts list before ordering, because serial number breaks split several fuel system components.
Manual Section: Fuel System p. 109Starter solenoid rebuild kit pieces missing, need the small internal spring and ball sizes
Open the starter exploded view on page 148 and work the callouts in order. The internal spring is listed at 2-13/16 inch free length and the drive ball at 11/32 inch, grade 24, both called out individually rather than bundled in a kit. Order each callout separately and check the note column for the drive assembly it applies to.
Manual Section: Starter System p. 148Battery and cable ordering confusion, wrong length negative cable shipped twice
Verify the battery and cable callouts on page 160 before you order again. The service replacement battery is listed as a 12 volt dry unit, and the negative cable is called out at 38 inch (965 mm) with a serial number break separating North American and European machines. Match your serial plate to the correct listing column.
Manual Section: Rear Harness and Battery p. 160Hydraulic oil filter manifold parts do not match the machine, two different manufacturers listed
Compare your manifold against the hydraulic oil filter breakdown on page 318 before ordering. The loader bucket circuit valve is listed at 5 psi for the Waterman built manifold, which is blue in color. Identify the manifold by color and casting first, then take the callout from the matching column so the valve and seals actually fit.
Manual Section: Hydraulic Oil Filter p. 318Fan belt part number needed for the cooling system, aftermarket cross-reference lists several lengths
Check the engine mounting and exhaust parts list on page 7. The belt is called out at 1574.8 mm long as part of the noise kit grouping, with separate serial number ranges for European and North American machines. Measure your old belt before ordering, and match the serial break in the notes column rather than trusting an aftermarket cross-reference.
Manual Section: Engine Mounting and Exhaust p. 7Parking latch and seat bar components hard to identify, single and dual bar setups look similar
Go to the brakes section beginning on page 276 and identify your seat bar configuration first, single or dual. Dual bar machines split again at serial number JAF0100497, so the linkage, springs and pivot pins differ across that break. Pull callouts only from the diagram matching both your bar count and serial range.
Manual Section: Brakes p. 276Frequently Asked Questions
What is the radiator cap pressure rating for the Case 1840?
The radiator cap for the Case 1840 engine cooling system is rated at 15 psi. p. 3
What is the correct belt part number for the 4-390 engine on North American models?
For North American models, the correct belt part number is J911558. p. 7
What is the oil filter capacity for the 4-390 engine in a Case 1840 skid steer?
The engine oil filter is a cartridge type, and for multi-pack orders, the part number is J908616MP. p. 31
What is the correct fuse rating for the instrument cluster on a Case 1840 skid steer?
The fuse for the instrument cluster is rated at 20 amps and is yellow in color. p. 155
How is this Case 1840 Parts Catalog delivered?
All 618 pages arrive as one searchable PDF at checkout. Read it at the desk, then take the phone out to the machine.
Are there any print restrictions on this Case 1840 manual?
Yes. No DRM, nothing blocks printing, so run off the pages you need on whatever printer you have.
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